CN204014164U - There is light modulation and compensate the synchronous LED driver starting of high low-light level - Google Patents
There is light modulation and compensate the synchronous LED driver starting of high low-light level Download PDFInfo
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- CN204014164U CN204014164U CN201420172851.XU CN201420172851U CN204014164U CN 204014164 U CN204014164 U CN 204014164U CN 201420172851 U CN201420172851 U CN 201420172851U CN 204014164 U CN204014164 U CN 204014164U
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- light modulation
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- tunable optical
- dimmer
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000005669 field effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The utility model discloses a kind ofly to be had light modulation and compensates the synchronous LED driver starting of high low-light level, comprise dimmer, LED, be connected in the tunable optical driver between this dimmer and LED, in this tunable optical driver, there is light modulation angle detection circuit, light modulation angle decoding circuit, while setting maximum output, input angle module, out-put supply is feedback and PWM comparator, hysteresis comparator, when this light modulation angle detection circuit and the maximum output of setting, input angle module and be connected on respectively this light modulation angle decoding circuit, the output of this light modulation angle decoding circuit and hysteresis comparator is connected on respectively this output current and feedbacks and PWM comparator.When dimmer is during with the use in parallel of multiple tunable optical drivers, can synchronously start multiple tunable optical drivers, and realize maximum output brightness compensation.
Description
Technical field
The utility model relates to LED art, refers in particular to a kind ofly to have light modulation and compensate the synchronous LED driver starting of high low-light level.
Background technology
Bulb coordinates dimmer to use, and is the most widely used traditional approach always, and the illumination taking LED as light source is applied as extends this traditional occupation mode, and the characteristic that LED driver need possess and function are done needs significantly and improved, to be applicable to application requirements.
Fig. 1 has shown the dimming scope curve chart of dimmer control osram lamp, and Fig. 2 has shown the dimming scope curve chart of dimmer control LED driving power.From the contrast of above-mentioned two figure, between dimmer control LED driving power regulation and control light output and regulation and control osram lamp, dimming scope has great difference.Osram lamp is directly accepted the phase control output energy of dimmer, has wider light exporting change scope.Because the output of LED light needs to be situated between by LED driving power SERVO CONTROL, the effect that left and right LED light is exported in the excursion reaction of the output phase of driving power to dimmer is whether similar in appearance to tungsten lamp light modulation.As Fig. 1 and Fig. 2 known, because driving power need have the operating voltage point of a minimum voltage requirement, cause dimming scope to change and differ from tungsten lamp.
Therefore, how designing a kind of characteristic of effective lifting LED driver, make it to have light modulation and compensate high low-light level and can synchronously start, is industry technical staff technical problem urgently to be resolved hurrily.
Utility model content
In view of this, the utility model is for the disappearance of prior art existence, its main purpose is to provide a kind ofly to be had light modulation and compensates the synchronous LED driver starting of high low-light level, when dimmer is during with the use in parallel of multiple tunable optical drivers, can synchronously start multiple tunable optical drivers, and realize maximum output brightness compensation.
For achieving the above object, the utility model adopts following technical scheme:
A kind of have light modulation and compensate the synchronous LED driver starting of high low-light level, comprise dimmer, LED, be connected in the tunable optical driver between this dimmer and LED, in this tunable optical driver, there is light modulation angle detection circuit, light modulation angle decoding circuit, while setting maximum output, input angle module, out-put supply is feedback and PWM comparator, hysteresis comparator, when this light modulation angle detection circuit and the maximum output of setting, input angle module and be connected on respectively this light modulation angle decoding circuit, the output of this light modulation angle decoding circuit and hysteresis comparator is connected on respectively this output current and feedbacks and PWM comparator.
Preferably, described tunable optical driver further comprises rectifier, high frequency voltage amplifier, wide region input start-up circuit, the input of this rectifier is connected on dimmer, join the respectively input of hysteresis comparator, high frequency voltage amplifier, wide region input start-up circuit of this rectifier output end, the output of this high frequency voltage amplifier, wide region input start-up circuit is all connected on this output current and feedbacks and PWM comparator.
Preferably, described dimmer output is through rectifier, the capacitor C of high frequency voltage amplifier
1two ends are DC potential V
1, field-effect transistor MOSFET high-frequency operation, in the time that field-effect transistor MOSFET ends, capacitor C
2two ends are via isolating transformer L and diode D
1charging, to diode Q
1it will be V that basic voltage is supplied with
c2+ V
c1sum is less than input power, in addition, wide region input start-up circuit is proposed the power assist operation that arch cut-off state moment starts, and forms more reliable LED driving power operating voltage supply circuit, makes the operating characteristic of the standby lower light modulation input angle degree of tunable optical driving implement.
Preferably, described output current is feedback and the output of PWM comparator join successively logic controller, high frequency diverter switch, isolation and output circuit, is connected on LED by this isolation and output circuit output.
Preferably, described dimmer and multiple tunable optical driver are arranged in parallel, each tunable optical driver LED that joins.
Preferably, the setting of connecting with a tunable optical driver of described dimmer, this tunable optical driver LED that joins.
The utility model compared with prior art has obvious advantage and beneficial effect, particularly, and as shown from the above technical solution:
One, by hysteresis comparator being set in tunable optical driver, when dimmer is during with the use in parallel of multiple tunable optical drivers, because error is to some extent controlled in detecting and output that two more parallels of tunable optical driver operate dimmer output angle, cause multiple tunable optical drivers in the time of low-light level, cannot start simultaneously, extinguish; Produce magnetic hysteresis effect via hysteresis comparator correction, control tunable optical driver startup, stop, so that the characteristic that LED lamp reaches the synchronous light modulation of low-light level, starts, stops.
Two, set maximum output by arranging in tunable optical driver time, input angle module, when dimmer is connected use with tunable optical driver, waveform when dimmer is adjusted to maximum output cannot reach the maximum signal identical with the waveform of input because of trigger angle and the factor of power supply supply, tunable optical driver may be judged dimmer executed light modulation action by accident but not is in maximum output state dimmer output phase angle decoding output simultaneously, corresponding input phase angle can input angle module when setting maximum output and set the maximum output current of tunable optical driver time, phase loss while output to compensate all kinds of dimmers maximums.
Three, utilize rectifier, high frequency voltage amplifier and wide region input start-up circuit, by input voltage self-promotion, to change with the modified line linearity of dimmer output angle and to make under lower dimmer output angle, driver still can start-up operation.
For more clearly setting forth architectural feature of the present utility model and effect, below in conjunction with accompanying drawing and specific embodiment, the utility model is elaborated.
Brief description of the drawings
Fig. 1 is the dimming scope curve chart of dimmer control tungsten lamp in background technology;
Fig. 2 is the dimming scope curve chart of dimmer control LED lamp in background technology;
Fig. 3 is the circuit block diagram of the embodiment of the utility model;
Fig. 4 is the high frequency voltage amplifier of the embodiment of the utility model, the circuit diagram of wide region input start-up circuit;
Fig. 5 is the Dimmable LED driver configuration mode schematic diagram that uses in parallel of the embodiment of the utility model;
Fig. 6 is the dimming scope curvilinear motion comparison diagram that adopts the forward and backward LED lamp of hysteresis comparator correction under the configuration mode state of Fig. 5;
Under the configuration mode state of Fig. 7 Fig. 5, adopt the circuit theory diagrams of hysteresis comparator correction;
Fig. 8 be in Fig. 5 tunable optical driver according to the schematic diagram of the synchronous on/off of B-H loop;
Fig. 9 is that the dimmer of the embodiment of utility model is connected in series the schematic diagram using with tunable optical driver;
Figure 10 is that in Fig. 9, dimmer is adjusted to maximum input oscillogram;
Figure 11 be in Figure 10 in the time that dimmer is adjusted to maximum output, because trigger angle and the factor of power supply supply cannot reach the oscillogram of the maximum signal identical with inputting waveform;
The circuit theory diagrams of input angle when Figure 12 is the maximum output of setting up tunable optical driver in Fig. 9.
Accompanying drawing identifier declaration:
10, dimmer 20, LED
30, tunable optical driver 301, rectifier
302, high frequency voltage amplifier 303, wide region input start-up circuit
304, light modulation angle detection circuit 305, light modulation angle decoding circuit
306, while setting maximum output, input angle module
307, hysteresis comparator 308, out-put supply are feedback and PWM comparator
309, logic controller 310, high frequency diverter switch
311, isolation and output circuit.
Embodiment
Please refer to shown in Fig. 3, the concrete structure that it has demonstrated the preferred embodiment of the utility model, includes dimmer 10, LED 20, is connected in the tunable optical driver 30 between this dimmer 10 and LED 20.
Wherein, when this tunable optical driver 30 comprises rectifier 301, high frequency voltage amplifier 302, wide region input start-up circuit 303, light modulation angle detection circuit 304, the maximum output of setting, input angle module 306, hysteresis comparator 307, out-put supply back coupling and PWM comparator 308, logic controller 309, high frequency diverter switch 310, isolation and output circuit 311.The input of this rectifier 301 connects dimmer 10, the output of rectifier 301 connects respectively high frequency voltage amplifier 302, wide region input start-up circuit 303, the input of light modulation angle detection circuit 304 and hysteresis comparator 307, the output of this light modulation angle detection circuit 304 connects light modulation angle decoding circuit 305, angle module 306 is inputted while the maximum output of setting joining on light modulation angle decoding circuit 305, light modulation angle decoding circuit 305, high frequency voltage amplifier 302, wide region input start-up circuit 303, the output of hysteresis comparator 307 is all connected on the input of out-put supply back coupling and PWM comparator 308, this out-put supply is feedback and the output of PWM comparator 308 logic controller 309 that joins successively, high frequency diverter switch 310, isolation and output circuit 311, finally be connected on LED 20 by isolation and output circuit 311 outputs.
As shown in Figure 4, utilize rectifier 301, high frequency voltage amplifier 302 and wide region input start-up circuit 303, by input voltage self-promotion, to change with the modified line linearity of dimmer 10 output angles and to make under lower dimmer 10 output angles, tunable optical driver 30 still can start-up operation.Particularly, these dimmer 10 outputs are through rectifier 301, the capacitor C of high frequency voltage amplifier 302
1two ends are DC potential V
1, field-effect transistor MOSFET high-frequency operation, in the time that field-effect transistor MOSFET ends, capacitor C
2two ends are via isolating transformer L and diode D
1charging, polarity is with reference to "+", "-" mark of figure 4.To diode Q
1it will be V that basic voltage is supplied with
c2+ V
c1sum is less than input power, is less than V
iN+ [I
l* X
l], in addition, wide region input start-up circuit 303 is proposed the power assist operation that arch cut-off state moment starts, and forms more reliable LED driving power operating voltage supply circuit, makes tunable optical driver 30 possess the operating characteristic of lower light modulation input angle degree.
As shown in Figure 5, it has shown dimmer 10 and multiple tunable optical drivers 30 use in parallel configuration mode.Known with reference to figure 7, after light modulation depth compensation, tunable optical driver 30 dimming curves move to left to dotted line position from the solid line position on original right side, because error is to some extent controlled in detecting and output that 30 two more parallels of tunable optical driver operate dimmer 10 output angles, cause more than 2 tunable optical driver 30 in the time of low-light level, cannot start simultaneously, extinguish.Produce magnetic hysteresis effects via hysteresis comparator 307 correction, control tunable optical driver 30 startup, stop, so that the characteristic that LED 20 reaches the synchronous light modulation of low-light level, starts, stops.Fig. 8 has shown by the revised curve chart of hysteresis comparator 307.
In Fig. 7, control out-put supply back coupling and PWM comparator 308 when dimmer 10 light modulation angle modulated light angle detection circuit 304,304 detectings of light modulation angle detection circuit and after decoding, now hysteresis comparator 307 has higher priority, makes tunable optical driver 30 according to the synchronous on/off operation of B-H loop work.
Fig. 9 has shown that dimmer 10 is connected in series the configuration mode using with tunable optical driver 30.Contrast Figure 10 and Figure 11, waveform in the time that dimmer 10 is adjusted to maximum output as shown in figure 10, because trigger angle and the factor of power supply supply cannot reach the maximum signal identical with the waveform of input, tunable optical driver 30 may be judged dimmer 10 executed light modulations actions by accident but not is in maximum output state (seeing Figure 11).In Figure 12, dimmer 10 output phase angle decoding outputs simultaneously, corresponding input phase angle can input angle module 306 when setting maximum output and set the maximum output current of tunable optical driver 30 time, the phase loss when compensating all kinds of dimmers 10 maximum output.
In sum, design focal point of the present utility model is:
One, by hysteresis comparator 307 is set in tunable optical driver 30, when dimmer 10 is during with the use in parallel of multiple tunable optical drivers 30, because error is to some extent controlled in detecting and output that 30 two more parallels of tunable optical driver operate dimmer 10 output angles, cause multiple tunable optical drivers 30 in the time of low-light level, cannot start simultaneously, extinguish; Produce magnetic hysteresis effects via hysteresis comparator 307 correction, control tunable optical driver 30 startup, stop, so that the characteristic that LED 20 lamps reach the synchronous light modulation of low-light level, start, stop.
Two, set maximum output by arranging in tunable optical driver 30 time, input angle module 306, when dimmer 10 is connected use with tunable optical driver 30, waveform when dimmer 10 is adjusted to maximum output cannot reach the maximum signal identical with the waveform of input because of trigger angle and the factor of power supply supply, tunable optical driver 30 may be judged dimmer 10 executed light modulation actions by accident but not is in maximum output state dimmer 10 output phase angle decoding outputs simultaneously, corresponding input phase angle can input angle module 306 when setting maximum output and set the maximum output current of tunable optical driver 30 time, phase loss while output to compensate all kinds of dimmers 10 maximums.
Three, utilize rectifier 301, high frequency voltage amplifier 302 and wide region input start-up circuit 303, by input voltage self-promotion, to change with the modified line linearity of dimmer 10 output angles and to make under lower dimmer 10 output angles, driver still can start-up operation.
The above, it is only preferred embodiment of the present utility model, not technical scope of the present utility model is imposed any restrictions, therefore any trickle amendment, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. one kind has light modulation and compensates the synchronous LED driver starting of high low-light level, comprise dimmer, LED, be connected in the tunable optical driver between this dimmer and LED, it is characterized in that: in this tunable optical driver, there is light modulation angle detection circuit, light modulation angle decoding circuit, while setting maximum output, input angle module, out-put supply is feedback and PWM comparator, hysteresis comparator, when this light modulation angle detection circuit and the maximum output of setting, input angle module and be connected on respectively this light modulation angle decoding circuit, the output of this light modulation angle decoding circuit and hysteresis comparator is connected on respectively this output current and feedbacks and PWM comparator.
2. according to claim 1 have light modulation and compensate the synchronous LED driver starting of high low-light level, it is characterized in that: described tunable optical driver further comprises rectifier, high frequency voltage amplifier, wide region input start-up circuit, the input of this rectifier is connected on dimmer, join the respectively input of hysteresis comparator, high frequency voltage amplifier, wide region input start-up circuit of this rectifier output end, the output of this high frequency voltage amplifier, wide region input start-up circuit is all connected on this output current and feedbacks and PWM comparator.
3. according to claim 2 have light modulation and compensate the synchronous LED driver starting of high low-light level, it is characterized in that: described dimmer output is through rectifier, the capacitor C of high frequency voltage amplifier
1two ends are DC potential V
1, field-effect transistor MOSFET high-frequency operation, in the time that field-effect transistor MOSFET ends, capacitor C
2two ends are via isolating transformer L and diode D
1charging, to diode Q
1it will be V that basic voltage is supplied with
c2+ V
c1sum is less than input power, in addition, wide region input start-up circuit is proposed the power assist operation that arch cut-off state moment starts, and forms more reliable LED driving power operating voltage supply circuit, makes the operating characteristic of the standby lower light modulation input angle degree of tunable optical driving implement.
4. according to claim 1 have light modulation and compensate the synchronous LED driver starting of high low-light level, it is characterized in that: described output current is feedback and the output of PWM comparator join successively logic controller, high frequency diverter switch, isolation and output circuit, is connected on LED by this isolation and output circuit output.
5. according to claim 1 have light modulation and compensate the synchronous LED driver starting of high low-light level, it is characterized in that: described dimmer and multiple tunable optical driver are arranged in parallel each tunable optical driver LED that joins.
6. according to claim 1 have light modulation and compensate the synchronous LED driver starting of high low-light level, it is characterized in that: the setting of connecting with a tunable optical driver of described dimmer, this tunable optical driver LED that joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172851.XU CN204014164U (en) | 2014-04-11 | 2014-04-11 | There is light modulation and compensate the synchronous LED driver starting of high low-light level |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172851.XU CN204014164U (en) | 2014-04-11 | 2014-04-11 | There is light modulation and compensate the synchronous LED driver starting of high low-light level |
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| CN204014164U true CN204014164U (en) | 2014-12-10 |
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| CN201420172851.XU Expired - Lifetime CN204014164U (en) | 2014-04-11 | 2014-04-11 | There is light modulation and compensate the synchronous LED driver starting of high low-light level |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407581B (en) * | 2015-12-24 | 2017-04-12 | 上海晶丰明源半导体股份有限公司 | Dimming circuit, dimming chip, dimming system and dimming method thereof |
| TWI628976B (en) * | 2017-09-11 | 2018-07-01 | 明志科技大學 | High-power laser diode driving device and driving and control method thereof |
| TWI662859B (en) * | 2017-11-08 | 2019-06-11 | 大陸商明緯（廣州）電子有限公司 | Feedback circuit capable of regulating response according to variation of dimming signal |
-
2014
- 2014-04-11 CN CN201420172851.XU patent/CN204014164U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407581B (en) * | 2015-12-24 | 2017-04-12 | 上海晶丰明源半导体股份有限公司 | Dimming circuit, dimming chip, dimming system and dimming method thereof |
| TWI628976B (en) * | 2017-09-11 | 2018-07-01 | 明志科技大學 | High-power laser diode driving device and driving and control method thereof |
| TWI662859B (en) * | 2017-11-08 | 2019-06-11 | 大陸商明緯（廣州）電子有限公司 | Feedback circuit capable of regulating response according to variation of dimming signal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180814 Address after: 361000 Gao Dian science and Technology Industrial Park, Huli District, Xiamen, Fujian Patentee after: XIAMEN KAOTEC ELECTRONIC TECHNOLOGY CO., LTD. Address before: 523000 Dongguan city Grohe Electronics Technology Co., Ltd., Longzhen Industrial Zone, Humen Town, Dongguan, Guangdong Patentee before: Dongguan Gaoyi Electronic Technology Co., Ltd. |